Investigating reflective food tracking and the effect of domain knowledge on personal information system users
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Global malnutrition is one of the worlds greatest health challenges. Various human computer interaction approaches to aid people in achieving healthier eating behaviour have been developed over the time. These approaches are of modernistic nature which has come under criticism in recent years where reflective design has been proposed as the alternative. The effect of tracking method, photo based or traditional, and the influence of domain knowledge or the absence thereof was studied. Sixty participants used one of four constructed smartphone applications over a period of two weeks. Photo based tracking was found to be more enjoyable compared to traditional tracking. The presence or absence of domain knowledge had limited to no effect.